Main
CD M
-
600
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Errata A
Comtech EF Data Documentation Update
Change to AUPC Target Eb/No Parameter
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Errata B
Subject: Revised Miscellaneous Table
Comments:
The following changes affects the values shown on page 15-9.
Change Specifics:
Errata C
Errata D
Comments:
Change Specifics:
12.2 Demodulator
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Errata E
Subject: Changed Figure 7-5, TPC Curve for Rate 7/8
Comtech Turbo Product Codec Rate 7/8 QPSK/OQPSK, 8-PSK and 16-QAM
Figure 7-5. Comtech EF Data Turbo Product Codec Rate 7/8 QPSK/OQPSK, 8-PSK AND 16-QAM
Errata F
CDM-600 AGC Voltage
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Errata G
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CDM-600
Part Number MN/CDM600.IOM Revision 7 February 9, 2005
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Table of Contents
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Tables
Figures
Preface
Customer Service
About this Manual
Conventions and References Metric Conversion
Cautions and Warnings
Recommended Standard Designations
Reporting Comments or Suggestions Concerning this Manual
Electrical Safety
Fuses
Environmental
Installation
~
Telecommunications Terminal Equipment Directive
EMC (Electromagnetic Compatibility)
Warranty Policy
Limitations of Warranty
Exclusive Remedies
Disclaimer
Chapter 1. INTRODUCTION
1.1 Standard Features
1.1.1 AUPC
1.1.2 Software Flash Upgrading
1.1.3 Verification
1.1.4 Data Interfaces
1.2 Major Assemblies
1.3 FAST Options and Hardware Options
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1.3.1 FAST Accessible Options
1.3.2 FAST System Theory
1.3.3 Implementation
1.3.4 Hardware Options
1.3.5 Supporting Hardware and Software
1.4 Compatibility
1.5 New in this Release
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Chapter 2. INSTALLATION
2.1 Unpacking
2.2 Mounting
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2.3 Configuration
2.4 Select Internal IF Loop
2.5 Connect External Cables
Chapter 3. FUNCTIONAL DESCRIPTION
CDM-600 Satellite Modem Revision 7 Functional Description MN/CDM600.IOM
32
Figure 3-1. CDM-600 Modem Block Diagram
AS/0423 BASEBAND FRAMING CARD
AS/0424 MODEM CARD
TX IF RX IF
MICROPROCESSOR (U44) & PROCESSOR FPGA (U49)
Chapter 4. PHYSICAL DESCRIPTION
4.1 Introduction
4.2 Front Panel
4.3 Rear Panel
4.3.1 IEC Line Input Connector
4.3.2 Rx and Tx IF Connectors (J1 and J2)
4.3.3 Overhead Data Connector (P3A)
4.3.4 Data Interface Connector (P3B)
4.3.5 External Reference Connector (J9)
4.3.6 Audio Connector (P4A)
4.3.7 Remote Control connector (P4B)
4.3.8 IDR Alarm connector (P5A)
4.3.9 Form C Traffic Alarm Connector (P5B)
4.3.10 Auxiliary Serial Connector (P6)
4.3.11 Balanced G.703 Interface Connector (P7)
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4.4 Dimensional Envelope
Chapter 5. CONNECTOR PINOUTS
5.1 Connector Overview
5.2 BNC Connectors
5.3 Overhead Interface Connector (P3A)
5.4 Data Interface Connector (P3B)
5.5 Audio Interface Connector (P4A)
5.6 Remote Control Interface Connector (P4B)
5.7 IDR Backward Alarms Connector (P5A)
5.8 Unit Alarms (P5B)
5.9 Auxiliary Serial Connector (P6)
5.10 Balanced G.703 Interface Connector (P7)
5.11 AC Power Connector
5.12 Ground Connector
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Chapter 6. FRONT PANEL OPERATION
6.1 Description
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CDM-600 Satellite Modem Revision 7 Front Panel Operation MN/CDM600.IOM
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Figure 6-3. Menu Trees
6.2 Opening Screen
6.3 Main Menu
COMTECH CDM-600 OPEN NETWORK MODEM TURBO: TPC/LDPC S/W VER 2.0.1
SELECT: CONFIGURATION TEST INFORMATIO
MONITOR STORE/LOAD UTILITY ODU FAST
6.3.1 CONFIG
CONFIG: ALL MODE TX RX CLOCKS D&I EDMAC MISC REMOTE MASK IMPED STATS
6.3.1.1 CONFIG: ALL
6.3.1.2 CONFIG: MODE
ALL = START (STOP, START)
MODE: TX=RS422:NONE RX=RS422:NONE (NONE,IBS,IDR,INSERT,EDMAC,D&I++,ESC++)
6.3.1.3 CONFIG: TX
CONFIG: TX: TX-IF
TX-IF: CARRIER = ON (ON,OFF,RTI) TX FREQ=176.0000MHz SPECTRUM
TX-IF: POWER ENCODER MOD DATA SCRAMBLER DATA=20000.000kbps SYMBOL=10000.000ksym
CONFIG: TX: POWER
OUTPUT POWER: MODE = MANUAL (MANUAL,AUPC) OUTPUT POWER LEVEL = 20.0 dBm
OUTPUT POWER: MODE = AUPC (MANUAL,AUPC) TARGET-EbNo/RANGE ALARM/ACTIO
MINIMUM EbNo OF REMOTE MODEM = 5.0dB MAXIMUM PERMITTED POWER INCREASE = 9dB
CONFIG: TX: ENCODER
ENCODER = TPC (NONE,VIT,SEQ,TCM,TPC,LDPC) REED-SOLOMON= OFF (ON,OFF)
MAX TX PWR ACTION = NONE (NONE, TX-ALM) REM DEMOD UNLOCK ACT = NOM-PWR(NOM, MAX)
ENCODER = NONE (NONE,VIT,SEQ,TCM,TPC,LDPC) DIFF-ENCODER= OFF (ON, OFF)
CONFIG: TX: ENCODER: REED-SOLOMON ON
REED-SOLOMON ENCODING = ON(200/180)
CONFIG: TX: MODULATION
MODULATION= QPSK (B,Q,OQ-PSK) FEC RATE = 1/2 (1/2,3/4,7/8)
MODULATION= QPSK (B,Q OQ,8PSK,16Q,8QAM) FEC RATE = 1/2 (1/2,3/4,7/8)
CONFIG: TX: DATA
CONFIG: TX: SCRAMBLER
TX DATA RATE = 01544.000 kbps DATA INVERT = OFF (ON,OFF)
TX SCRAMBLER = ON (ON,OFF) FRAME SCRAMBLER
TX SCRAMBLER = IESS (NORMAL,IESS,OFF) IESS-315 V.35 SCRAMBLER
6.3.1.4 CONFIG: RX
CONFIG: RX: RX-IF
RX-IF DECODER DEMOD DATA DESCRAM EbNo DATA=00064.000kbps SYMBOL=00037.333ksym
ACQUISITION SWEEP RANGE = +/- 32 kHz RX FREQ=070.0000 MHz SPECTRUM INVERT=OFF
CONFIG: RX: DECODER
DECODER = VIT NONE,VIT,SEQ,TCM,TPC,LDPC) REED-SOLOMON = OFF (ON,OFF)
DECODER = NONE (NONE,VIT,SEQ,TCM,TPC,LDPC) DIFF-DECODER= OFF (ON,OFF)
CONFIG: RX: DECODER: REED-SOLOMON ON
REED-SOLOMON DECODING = ON(200/180)
CONFIG: RX: DEMODULATION
CONFIG: RX: DATA
DEMODULATION = QPSK(B,Q,OQ,8PSK,16QAM) FEC RATE = 1/2 (1/2,3/4,7/8)
RECEIVE DATA RATE = 00064.000 kbps DATA INVERT = OFF (ON,OFF)
DEMODULATION= QPSK (B,Q OQ,8PSK,16Q,8QAM)
CONFIG: RX: DESCRAMBLER
RX DESCRAMBLER = ON (ON,OFF)
RX DESCRAMBLER = IESS (NORMAL,IESS,OFF) IESS-315 V.35 DESCRAMBLER
CONFIG: RX: EbNo
6.3.1.5 CONFIG: CLOCKS
CONFIG: CLOCKS: TX CLOCK
RECEIVE EbNo ALARM POINT = 02.0 dB
TRANSMIT CLOCK = INTERNAL(SCT) (INT(SCT),TX-TERR(TT),RX-LOOP,EXT-CLK)
CONFIG:CLOCKS: RX BUFFER/CLOCK
CLK= RX-SAT (RX-SAT,TX-TERR,EXT-CLK,INS) BUFFER-SIZE = 00016bytes(00002ms) CENTER
CONFIG: CLOCKS: RX BUFFER/CLOCK: CENTER
CONFIG: CLOCKS: EXT-BASEBAND-CLOCK
CONFIG: CLOCKS: EXT-FREQ-REF
CONFIG: CLOCKS: INTERNAL REFERENCE
INTERNAL HI-STABILITY 10 MHz REFERENCE FINE ADJUST: +048 (+/-999)
6.3.1.6 CONFIG: DROP & INSERT
CONFIG: DROP & INSERT: DROP CHANNEL TIMESLOTS
DRP-TYPE= T1-D4 CHAN/TS LOOP=Y (Y/N) INS-TYPE= T1-D4 CHAN/TS
DRP-CH: 1 2 3 4 TS: 01 02 03 04
CONFIG: DROP & INSERT: INSERT CHANNEL TIMESLOTS
6.3.1.7 CONFIG: EDMAC
6.3.1.8 CONFIG: MISC
INS-CH: 1 2 3 4 TS: 01 02 03 04
CONFIG: MISC: G.703 CODE
CONFIG: MISC: IDR-ESC-TYPE
CONFIG: MISC: ADPCM AUDIO VOLUME
TX-1 VOLUME= +0 dB TX-2 VOLUME= -2 dB RX-1 VOLUME= +2 dB RX-2 VOLUME= -4 dB
TXIDR-TYPE: 64k DATA (64k DATA,AUDIO) RX-IDR-TYPE: 64k DATA (64k DATA,AUDIO)
CONFIG: MISC: HIGH-RATE-ESC
CONFIG: MISC: WARM-UP
HIGH-RATE-ESC = OFF (ON,OFF) BAUDRATE = 9600 PARITY:DATA:STOP = N81
HIGH-STAB REFERENCE POWER-UP WARM-UP: NO DELAY(INSTANT-ON) (INSTANT-ON,DELAY)
6.3.1.9 CONFIG: REMOTE CONTROL
ONFIG: REMOTE CONTROL: INTERFACE
REMOTE CONTROL = LOCAL (LOCAL,REMOTE)
INTERFACE= RS-485-4W (232,485-2,485-4) ADDRESS= 0001 BAUDRATE= 9600
COMTECH CDM-600 OPEN NETWORK MODEM HIGH-STABILITY REF WARMING UP: 045 SEC
CONFIG: REMOTE CONTROL: CHAR FORMAT
6.3.1.10 CONFIG: MASK
CONFIG: MASK: AIS
PARITY:DATA-BITS:STOP-BITS = N81 (N81,E72,O72)
CONFIG: MASK: BUFFER SLIP
CONFIG: MASK: RX-IF
CONFIG: MASK: SATELLITE ALARMS
CONFIG: MASK: SATELLITE ALARMS: TX
BUFFER SLIP= ACTIVE (ACTIVE,MASK)
CONFIG: MASK: SATELLITE ALARMS: RX
CONFIG: MASK: TERR-ALM
00 minutes (00 TO 90)
6.3.1.11 CONFIG: IMPEDANCE
6.3.1.12 CONFIG: STATISTICS
6.3.2 TEST
MODEM TEST MODE = NORMAL (NORM,TX-CW,TX-1/0,IF,RF,DIG,I/O)
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6.3.3 INFORMATION
INFO:ALL
(STOP, START)
INFO: ID
INFO: MODE
INFO: TX
A sample display of TX Info is shown. The information displayed here is as follows:
IT+RS:126/112 00604.000 QPSK 1/2 SCRM
V
INFO: RX
INFO: CLOCKS
INFO: EDMAC
INFO: DROP TYPE
INFO: INSERT TYPE
INFO: REMOTE
INFO: ALARMS MASK
INFO: MISC
REMOTE-CONTROL= LOCAL ADDRESS= 0000 INTERFACE = RS-232 9600 BAUD N81
ALARMS MASKED: TX-AIS RX-AIS BUF-SLIP AGC EBNO SAT
6.3.4 MONITOR
Select the parameter to Monitor using the [][] arrow keys, then press ENTER.
MONITOR: LIVE-ALARMS
MONITOR: LIVE-ALARMS STORED-EVENTS STATISTICS RX-PARAMS AUPC-PARAMS
6.3.4.1 MONITOR: STORED EVENTS
STORED EVENTS: CLEAR ALL: NO (NO,YES) #199 FT-FRAME SYNC 23/07/01 16:25:24
6.3.4.2 MONITOR: STATISTICS
STATISTICS: STA114: 16.0,16.0,9.0,9.0 09/12/99 14:48:06 CLEAR ALL: NO (N/Y)
6.3.4.3 MONITOR: RX PARAMETERS
6.3.4.4 MONITOR: AUPC-PARAMS
6.3.5 STORE/LOAD
RX=PARAMETERS: EbNo=11.4dB F=+11.7kHz BER=0.0E-9 BUFFER=51% RX-LEVEL=-43dBm
AUPC-PARAMS: REMOTE EbNo=6.8dB TRANSMIT POWER INCREASE=1.2dB
6.3.5.1 STORE/LOAD: OVERRIDE CONFIGURATION
6.3.6 UTILITIES
EDIT DISPLAY BRIGHTNESS: 100%
6.3.6.1 UTILITIES: SET-RTC
6.3.6.2 UTILITIES: BRIGHTNESS
6.3.6.3 UTILITIES: LAMP
6.3.6.4 UTILITIES: 1:1 MANUAL SWITCH
6.3.6.5 UTILITIES: CIRCUIT ID
FRONT PANEL LAMP TEST: XXXXXXX
PRESS ENTER KEY TO FORCE UNIT INTO STANDBY (1:1 ONLY)
6.3.7 ODU
6.3.8 FAST
6.3.8.1 FAST: SET
6.3.8.2 FAST: VIEW
Chapter 7. FORWARD ERROR CORRECTION OPTIONS
7.1 Introduction
7.2 Viterbi
7.3 Sequential
7.4 Reed-Solomon Outer Codec
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7.5 Trellis Coding (FAST Option)
7.6 Turbo Product Codec (Hardware Option)
7.7 TPC and Low Density Parity Check (LDPC) coding 7.7.1 Introduction
7.7.2 LDPC versus TPC
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7.7.3 End-to-End Processing Delay
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7.8 Uncoded Operation (No FEC)
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Viterbi Decoding
Sequential Decoding 64 kbps
Sequential Decoding 1024 kbps
Sequential Decoding 2048 kbps
Viterbi with concatenated RS 220,200 Outer Code
Sequential with concatenated RS 220,200 Outer Code 512 kbps
8-PSK/TC M Rate 2/3 Decoding, with and without 219, 201 RS Outer Code
Comtech Turbo Product Codec Rate 3/4 QPS K/OQPS K, 8-PSK and 16-QAM
Comtech Turbo Product Codec Rate 7/8 QPSK /OQPS K, 8-PSK and 16-QAM
Comtech Turbo Product Codec Rate 1/2 QPSK/OQPSK Rate 0.95 QPSK/OQPSK and 8-PSK
Comtech Turbo Product Codec Rate 21/44 BPSK Rate 5/16 BPSK
16-QAM Viterbi, Rate 3/ 4 and Rate 7/8 with 220,200 RS Outer Code
Differential Encoding - No FEC, no scrambling
Figure 7-14. LDPC, Rate 1/2, BPSK, (O)QPSK
LDPC, BPSK, QPSK, (O)QPSK, Rate 1/2
Figure 7-15. LDPC, Rate 2/3, (O)QPSK/8-PSK/8-QAM
LDPC Rate 2/3 QPSK/OQPSK/8-PSK/ 8-QAM
Figure 7-16. LDPC, Rate 3/4, (O)QPSK/8-QAM
8910 11 12
1234567
LDPC, Rate 3/4 QPSK/OQPSK/ 8-QAM
Figure 7-17. LDPC, Rate 3/4, 8-PSK / 8-QAM
8910 11 12
1234567
LDPC Rate 3/4 8-PSK/16-QAM
Tyical limit 8-PSK Rate 3/4
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Chapter 8. OFFSET QPSK OPERATION
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Chapter 9. OPEN NETWORK OPERATIONS
9.1 Introduction
9.2 IBS
9.2.1 IBS Clock/data recovery and De-jitter
9.2.2 IBS Framing
9.2.3 IBS Engineering Service Channel
9.2.4 IBS Scrambling
9.3 Drop and Insert
9.3.1 D&I Primary Data Interfaces
9.3.2 D&I Framing
9.4 IDR
9.4.1 IDR Primary Data Interfaces
9.4.2 IDR Engineering Service Channel
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Chapter 10. CLOCK MODES AND DROP AND INSERT (D&I)
10.1 Transmit Clocking
10.1.1 Internal Clock
10.1.2 Tx Terrestrial
10.1.3 Rx Loop-Timed, RX=TX
10.1.4 Rx Loop-Timed, RX<>TX (Asymmetric Loop Timing)
10.1.5 External Clock
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10.4 Drop and Insert
10.5 Frame Formats
10.6 Time Slot Selection
10.7 Drop and Insert Clocking
10.8 Rx Buffer Clock = Insert (D&I only)
10.9 Single-Source Multiple Modems
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Chapter 11. EDMAC CHANNEL
11.1 Theory Of Operation
11.2 M&C Connection
11.3 Setup Summary
11.4 Drop & Insert ++
Chapter 12. AUTOMATIC UPLINK POWER CONTROL
12.1 Introduction
12.2 Setting AUPC Parameters
12.2.1 Target Eb/No
12.2.2 Max Range
12.2.3 Alarm
12.2.4 Demod Unlock
12.3 Compensation Rate
12.4 Monitoring
Chapter 13. ESC++
13.1 Introduction
13.2 Overhead Details
13.3 Available Baud Rates
13.4 Configuration
13.5 Effect on Eb/No performance
Chapter 14. FLASH UPGRADING
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Chapter 15. SUMMARY OF SPECIFICATIONS
15.1 Modulator
CDM-600 Satellite Modem Revision 7 Summary of Specifications MN/CDM600.IOM
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CDM-600 Satellite Modem Revision 7 Remote Control MN/CDM600.IOM
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Comtech EF Data CDM-600 Transmit Power Spectral Density, referred to symbol rate
15.2 Demodulator
Data rate range, operating modes, de-scrambling, input impedance/return loss etc, as per Modulator
CDM-600 Satellite Modem Revision 7 Summary of Specifications MN/CDM600.IOM
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CDM-600 Satellite Modem Revision 7 Remote Control MN/CDM600.IOM
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CDM-600 Satellite Modem Revision 7 Summary of Specifications MN/CDM600.IOM
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15.3 Data Interfaces
CDM-600 Satellite Modem Revision 7 Remote Control MN/CDM600.IOM
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15.4 Automatic Uplink Power Control
15.5 Framing Summary
CDM-600 Satellite Modem Revision 7 Summary of Specifications MN/CDM600.IOM
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15.6 Data Rate Ranges
CDM-600 Satellite Modem Revision 7 Remote Control MN/CDM600.IOM
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15.7 Miscellaneous
15.8 Approvals
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Chapter 16. REMOTE CONTROL
16.1 Introduction
16.2 EIA-485
16.3 EIA-232
16.4 Basic Protocol
16.5 Packet Structure
16.5.1 Start Of Packet
16.5.2 Address
16.5.3 Instruction Code
16.5.4 Instruction Code Qualifier
16.5.5 Message Arguments
16.5.6 End Of Packet
16.6 Alphabetical list of Remote Commands
Exception: Select DROP or D&I++ mode using TFM (Transmit Framing type) which is highest priority
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Eb/No = 10 log10 (10 (Co+No/No )/10) -1) - 10 log10 (FEC Code Rate) - 10 log10 (bits/symbol)
CDM-600 Satellite Modem Revision 7 Eb/No Measurement MN/CDM600.IOM
B3
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Appendix C. FAST Activation Procedure
C.1 Introduction
C.2 Activation Procedure C.2.1 Serial Number
C.2.2 View currently installed features
C.2.3 Enter Access Codes
Appendix D. ODU OPERATION
D.1 Introduction
D.2 MENU TREES D.2.1 MODEM MAIN MENU
D.2.2 ODU
D.2.3 (ODU) ENABLE, 1:1
D.2.4 (ODU,ENABLE,1:1) REDUNDANCY BOX
D.2.5 (ODU,ENABLE,1:1) CSAT#1 (ODU,ENABLE,1:1) CSAT#2 (ODU,ENABLE,STANDALONE CSAT)
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D.2.29 (ODU,ENABLE,STANDALONE KST,CONFIG) TX
D.2.30 (ODU,ENABLE,STANDALONE KST,CONFIG) RX
D.2.31 (ODU,ENABLE,STANDALONE KST,CONFIG) MISC
D.2.32 (ODU,ENABLE,STANDALONE KST) INFORMATION
D.2.33 (ODU,ENABLE,STANDALONE KST,INFO) MODEL
D.2.34 (ODU,ENABLE,STANDALONE KST,INFO) TX+RX-PARAM
D.2.35 (ODU,ENABLE,STANDALONE KST,INFO) MISC
D.2.36 (ODU,ENABLE,STANDALONE KST,INFO) NUMBERS
D.2.37 (ODU,ENABLE,STANDALONE KST) ALARMS
Index
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CDM-600
Open Network Satellite Modem Manual Addendum A
New Features/Changes
6.1 Description of D&I with ESC and AUPC
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METRIC CONVERSIONS
Units of Length
Temperature Conversions
Units of Weight
2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161
